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The Captain's Secret Desire

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castle tv series fanfic kate beckett nypd captain lately is obsessed with big black cock and ask her husband rick castle to find her black lover .rick says he would handle it and he the guy his old friendmonroe bradford 45 old african american who loves to fuck white wives

Chapter 1: meeting

The ice cubes in Rick’s glass had dissolved an hour ago, leaving behind a watery, pathetic scotch he kept sipping out of sheer habit. The view from their penthouse terrace was postcard-perfect—a glittering, indifferent New York skyline—but it felt like a painting he’d stared at for too long. The same. Everything was the same.

He heard the click of her heels on the marble floor behind him before he smelled her perfume.

“You’re home early.” Kate’s voice was measured, a captain’s voice, but there was a new tension in it lately, a thread pulled taut.

“Needed to think.” He turned. She was still in her work clothes, the sleek black pantsuit, her hair a fiery cascade he used to lose his hands in. Her beauty was a familiar ache. “We need to talk about your… request.”

Her jaw tightened, just a fraction. “It’s not a request, Rick. It’s a need. I’ve explained.”

“A need for a black lover.” He said the words flatly, letting them hang in the expensive air between them. They still sounded unreal, like a bad plot twist from one of his Nikki Heat novels. “Not just an affair. A specific… type.”

“It’s not about race.” She crossed her arms, a defensive gesture. “It’s about… sensation. Difference. Something I can’t articulate and don’t want to psychoanalyze. It’s a feeling. And it’s consuming me.”

He saw it then, the obsession burning behind her carefully controlled eyes. It had been eating at her for months, this restless, hungry thing. It had made her distant in their bed, impatient with his touches, which she now found “predictable.” The word had cut deeper than any criticism of his prose.

He loved her. That was the terrible, anchoring truth. He loved her enough that her happiness—even this brutal, bizarre version of it—mattered more than his own pride. Or maybe he was just a coward who couldn’t face the emptiness of the penthouse without her in it.

“Okay,” he said, the word tasting like ash.

Her eyes widened. “Okay?”

“I’ll help you.” He forced a smile, the charming, playful Rick Castle mask sliding into place. It felt like wearing someone else’s skin. “If this is what you need, we’ll do it right. Safely. Discreetly.”

“You’ll help me find someone?” The breath she let out was shaky, laced with a terrifying hope.

“I know someone.” The admission cost him something. “Monroe Bradford.”

“Your friend from college?”

“He’s charming. Discreet. And he has a… particular appreciation for beautiful women. All women.” Rick drained the watery scotch. “I’ll invite him to dinner.Here. Friday.”

“Here?” Her voice was a whisper.

“My terms, Kate. If I’m orchestrating this, we do it my way. It happens here, where I know you’re safe. Where I can…” He trailed off. Where he could what?Watch? He didn’t finish the thought.

She nodded, a quick, jerky movement. “Okay. Your terms.”

“And you’ll wear the black silk dress. The one from our anniversary in Milan. With those high heels. The severe ones that make your legs look like they go on forever.” He was describing her like a character now, styling the heroine for a scene. It was easier that way. “You want a fantasy? Let’s set the stage properly.”

A flicker of something—shame, excitement, he couldn’t tell—crossed her face. “Alright.”

“Good.” He walked past her, toward the bar to pour a real drink. He didn’t look back.

Friday arrived with a leaden sky that gave way to a cool, clear evening. Rick moved through the penthouse like a ghost, straightening a book that was already straight, adjusting the lighting a half-degree warmer. He’d hired a chef to deliver and serve a meal he knew Kate wouldn’t taste and Monroe would only politely appreciate. This was about something else entirely.

He heard her before he saw her.

The sound was different from her usual tread. This was a deliberate, punishing click of stilettos on marble, each step a statement. He turned.

The dress was a weapon. The black silk whispered against her skin, clinging to every curve before falling in a deceptively simple sheath to just above her knees. It was backless, a plunge of smooth, pale skin he knew the feel of by heart. The heels were indeed severe, thin black spikes that elevated her, changing her posture, arching her back. She’d done her hair differently, swept up in a way that exposed the elegant line of her neck. Her makeup was darker, smokier. She was Kate, but not his Kate. She was the avatar of her own need.

“Christ, Kate,” he breathed, the words knocked out of him.

“You specified.” Her voice was low, a little hoarse. She was nervous.

“I did.” He approached her, fought the urge to touch the exposed skin of her back. “You look… unbelievable.”

The doorbell chimed, a soft, melodious tone that felt obscenely loud. The mask snapped back into place. Rick’s smile was all teeth. “Showtime.”

Monroe Bradford filled the doorway. He was tall, broad-shouldered, dressed in a charcoal suit that cost more than Rick’s first advance. He was handsome in a rugged, confident way, his smile easy and his eyes knowing. He grasped Rick’s hand in a firm shake, then his gaze slid past him and landed on Kate.

Appreciation flickered there, sharp and hot. Rick saw it. He’d counted on it.

“Monroe. Welcome.” Rick’s voice was too hearty.“Rick. Always a pleasure.” Monroe’s attention was only half on him. “And Kate. Rick’s description didn’t do you justice. He called you ‘captivating.’ Understatement.”

“A pleasure to finally meet you, Monroe,” Kate said, extending her hand. Monroe took it, his large, dark hand enveloping hers. He didn’t shake it. He just held it, his thumb brushing her knuckles. Rick watched her breath catch.

Dinner was a surreal pantomime. The chef served seared scallops and filet mignon. Wine was poured. Monroe was, as ever, charming. He told stories of his consulting deals in Dubai, his sailboat in the Med. He engaged Kate directly, asking about her work, listening with an intensity that Rick, in his own selfish love, sometimes forgot to muster. He made her laugh, a real, unguarded sound Rick hadn’t heard in months. It was torture.

The conversation flowed around Rick. He became the host, the facilitator, pouring more wine, urging seconds he didn’t want them to eat. He watched Monroe’s eyes linger on the line of Kate’s neck, on the way the silk stretched across her breasts when she leaned forward to listen. He watched Kate’s cheeks flush under the attention. The chemistry was a tangible thing, a heat haze in the cool, modern room.

Coffee was declined. The chef was dismissed. An awkward, charged silence descended upon the trio in the living room, the city lights twinkling mockingly outside the floor-to-ceiling windows.

Monroe set his brandy glass down with a soft finality. “This has been a wonderful evening. But I think we’re all adults here, and we’re all aware this isn’t just a social call.” He looked at Rick, then at Kate. His gaze was direct, unashamed. “Rick explained the… situation.”

Kate’s spine straightened on the couch. She looked at Rick, a question, a panic in her eyes. He gave a barely perceptible nod. This was the cliff. She had to jump.

“He did,” Kate said, her voice gaining strength. She stood up, the movement elegant and fraught in the high heels. “And you’re comfortable with it?”

Monroe stood as well, closing the distance between them. He was closer to her than Rick was. “Kate, a beautiful woman knowing exactly what she wants is the most comfortable situation a man can be in.” His voice was a low rumble. He reached out, not touching her, but his hand hovered near the small of her exposed back. “Do you want this?”

She nodded, once. “Yes.”

Monroe’s eyes flicked to Rick. “And you’re alright with this? In your home?”

Rick’s mouth was desert-dry. He swallowed. “It’s what she needs.” The words were barely audible.

That was all the confirmation Monroe needed. He finally touched her, his big hand settling on the bare silk of her back, fingertips pressing into her spine. Kate shuddered. It wasn’t a shiver of cold.

“The bedroom, I assume?” Monroe asked, still looking at Rick.

Rick couldn’t speak. He just gestured weakly down the hall.

Monroe guided Kate forward, his hand possessive on her back. She went with him, those brutal heels clicking a steady, retreating rhythm on the marble. She didn’t look back.

Rick didn’t follow. He stood rooted, listening. The click of heels turned to a muffled thud on the bedroom carpet. Then, the sound of his bedroom door closing.Not a slam. A soft, definitive click.

Silence.

Then, a low murmur—Monroe’s voice, too indistinct to make out words.A beat. A sharp, high gasp from Kate. It was a sound of surprise, of undeniable pleasure.

Rick’s legs gave out. He sank into the couch, the same couch where she’d curled against him to watch movies, where they’d made plans. He stared at the empty hallway entrance.

From the bedroom, he heard the rustle of fabric. The whisper of silk slipping from skin. A soft, male chuckle. Then Kate’s voice, breathy and unfamiliar: “Oh, god…”

Rick squeezed his eyes shut, but it only amplified the sounds. The creak of his bed. A deep, pleasured groan—Monroe’s. The sharp, rhythmic slap of skin against skin began, a brutal, undeniable cadence. Each slap was a punctuation mark in a sentence he’d agreed to but now didn’t understand.

Kate’s cries grew louder, less structured, raw. They were sounds he’d heard before, but never like this—uninhibited, desperate, soaring. “Yes! Right there! Fuck!” she screamed, her voice breaking on the obscenity.

“You like that, don’t you?” Monroe’s voice, a thick, possessive growl cutting through her cries. “You needed this. Tell me you needed this.”

“I needed it! I need it!” she sobbed, the sound freighted with ecstasy. “Don’t stop! Please!”

The headboard began to thump against the wall in a steady, driving rhythm, a vile metronome keeping time. Each thud vibrated through the apartment, through the couch where Rick sat paralyzed. It was the sound of his world being dismantled, beam by beam.

The sounds crescendoed—a guttural roar from Monroe, a shattered, screaming climax from Kate that seemed to go on and on, filled with a release so profound it sounded like agony.

Then, silence.

A heavy, breathing silence.

He didn’t move. He just stared at the hallway, waiting for the door to open, for the next act of this unbearable play to begin.

He just stared at the hallway, waiting for the door to open, for the next act of this unbearable play to begin.

The silence from the bedroom was brief. Then, a low murmur started up again. Rick could hear the bedsprings groan. A soft, feminine laugh floated down the hall—Kate’s laugh, but lighter, freer than he’d heard in years. It was followed by the deep, approving rumble of Monroe’s voice.

Rick stood up, his body moving on a current of pure, masochistic need. He walked slowly, silently, down the plush hallway until he stood outside his own bedroom door. He didn’t dare touch the handle. He just listened, his forehead nearly pressing against the cool wood.

“You’re fucking incredible,” Monroe was saying, his voice thick and satisfied.

“You’re… not so bad yourself,” Kate replied, breathless. There was a rustling of sheets. “God, I feel…”

“Used?” Monroe suggested, not unkindly.

“Alive,” she corrected, her voice a whisper Rick had to strain to hear.

“Mmm. We’re just getting started, baby.”

And they did. The night unspooled in a series of raw, acoustic snapshots that drilled into Rick’s skull. He retreated to the living room couch, a bottle of scotch now clutched in his hand, but he couldn’t drown out the symphony of their coupling.

Around midnight, he heard Kate’s voice, desperate and pleading. “Please, Monroe. Like that. Just like that. Fuck me harder.”

The slapping of skin intensified, faster, wetter. Monroe grunted with each thrust, a primal, animal sound. “You take it so good,” he growled. “You love this big black cock, don’t you? Tell me you love it.”

“I love it,” Kate moaned, her voice breaking into a sob. “I fucking love it.”

Rick took a long, burning pull from the bottle.

Later, maybe around two, he heard a cry from the bedroom, followed by Monroe’s commanding tone. “Turn over. On your knees.” The sound of movement, then Kate’s eager whimper. “Arch that back. Yeah. Present that perfect white ass to me.”

The subsequent sounds were even more brutal, more invasive. Each driving impact was a hammer blow on Rick’s sanity. Kate’s cries were muffled, as if her face was pressed into a pillow, but they were no less intense. She chanted his name, “Monroe, Monroe, Monroe,” like a prayer, each repetition a lash on Rick’s skin.

He must have dozed off, the bottle empty on the floor beside him, because the first grey light of dawn was seeping into the room when new sounds woke him. Not from the bedroom. From the hallway leading to the master bath.

The shower was running. Steam crept from under the bathroom door.

And then, through the hiss of water, he heard them again.

Kate’s voice, high and gasping. “Oh, yes! Right there!”

A wet, rhythmic slapping echoed in the tiled space. It was faster, more frantic than the sounds from the bed.

“Ride it,” Monroe commanded, his voice echoing slightly off the marble. “Ride that dick. Fuck yourself on it.”

Rick could picture it with horrifying clarity. Kate in the spacious glass stall, water sluicing over her, her back pressed against the cold tile, her legs wrapped around Monroe’s waist as he lifted her, impaling her again and again. Or maybe she was bent over, hands braced against the wall, taking him from behind while the steam gathered around them.

“You can’t get enough, can you?” Monroe groaned. “You’re a fucking addict.”

“I am! I am!” she screamed, the sound mingling with the spray. “Don’t stop! Make me come again!”

The pace became punishing, the wet slaps merging into a continuous, frenzied rhythm. Kate’s screams crescendoed, raw and shattered, until they suddenly choked off into a long, trembling wail that was swallowed by the steam and the water.

Silence, save for the shower’s hiss.

Then, Monroe’s low laugh. “Damn, girl. You trying to kill a brother?”

A weak, satiated giggle from Kate. The water shut off.

Rick sat in the greying light, utterly hollowed out. He heard the bathroom door open, heard their damp footsteps pad back toward the bedroom. Heard the soft, post-coital murmurs he knew so well, only in a different timbre, with a different name whispered.

He didn’t move until he heard the front door open and close softly an hour later. Monroe was leaving.

A few minutes after that, Kate appeared in the hallway. She wore one of Rick’s old Yale sweatshirts and nothing else. Her hair was damp, her skin glowing. She looked profoundly rested, and utterly, completely different. There was a softness in her eyes, a relaxation in her shoulders that he hadn’t seen in months. Maybe years.

She saw him on the couch, the empty bottle. Her expression flickered—a pang of guilt, quickly submerged beneath a deeper, more unassailable satisfaction.

“Hey,” she said, her voice rough from use.

Rick could only stare. The scent of his own shower gel—and something else, something musky and foreign—wafted from her.

“Coffee?” she asked, turning toward the kitchen as if it were any other morning. As if the universe hadn’t been ripped apart and sloppily stitched back together around him while he sat and watched.

He found his voice, but it was a stranger’s. “Sure, Kate. Coffee would be great.”

Coffee would be great.”

The words hung between them, the artificial normalcy so thick he could choke on it. Kate moved into the kitchen, her bare feet silent on the floor. The coffee grinder’s whir felt like an assault. Rick stared at her back, at the way the oversized sweatshirt—his sweatshirt—hung off one shoulder, revealing a darkening mark he hadn’t put there.

She turned, leaning against the stainless steel counter, the picture of domestic aftermath. Her eyes, though, were still somewhere else. Somewhere heated and dark.

“Monroe and I talked. After,” she said. Her voice was casual, like she was discussing a new gym schedule. “We’ve set some terms.”

Rick’s gut twisted. Terms. Like a business deal for her body. He said nothing.Just waited.

“Wednesday nights,” she continued, her gaze drifting to the espresso machine as it hissed. “That’s our scheduled night. He’ll come over, or I’ll go to his place. The whole night.”

Rick closed his eyes for a beat. Wednesdays. He’d have to find somewhere to be. The gym. A hotel bar. He’d just… disappear.

“And besides that…” She looked at him now, a flat, practical light in her eyes. “We’ve agreed on the possibility of quickies.Spontaneous ones. When the mood strikes one of us. We’ll be discreet, of course.”

She took a step toward him, the mug steaming in her hand. “I’ll text you. Whenever it’s going to happen, whether it’s the full night or just a… quickie. I’ll text ‘Conference.’ That’s the code. So you’re not waiting up, and you know. So you’re not surprised.”

Don’t be surprised your wife is getting fucked by another man. Just check your phone for the memo.

He wanted to laugh, a bitter, broken sound. Instead, he took the coffee she offered. “Okay.”

“This is what I need, Rick,” she said, her voice dropping, an attempt at intimacy that felt like salt in the wound. “You understanding? Not just allowing it. Understanding it. It’s like… a part of me was starving. Monroe is feeding it.”

He nodded, sipping the scalding coffee, letting the pain on his tongue eclipse the one in his chest. “I want you to be… fed.”

She gave him a small, grateful smile that shattered him all over again. She drifted back to the bedroom, to shower again, maybe, to sleep in the sheets that smelled of them.

His phone vibrated on the table two days later, on a Tuesday afternoon. He was in his study, staring at a blinking cursor on a blank page.

The screen lit up with a single word from Kate.Conference.

It was 3:17 PM. A quickie.

His mind short-circuited. He saw flashes: Kate bent over the couch in the living room, her suit skirt pushed up, her panties on the floor. Monroe, still in his tailored slacks, unzipped, driving into her from behind while she bit her hand to stay quiet. Or maybe in his car, parked in some underground garage, her knees on the passenger seat, head against the window. Fast, rough, urgent. Fulfilling the craving she described.

He sat there, paralyzed, for fifteen minutes. Then, the follow-up text.All clear. Home by six for dinner x

The ‘x’ was the cruelest part.

At dinner, she was radiant.Chatty. She talked about a case, about the new DA, about the Thai place she wanted to try. Her energy was boundless. Vibrant.Alive. She ate with an appetite he hadn’t seen in months.

Rick watched her. The hair she’d re-done. The faint, fresh scent of Monroe’s expensive cologne clinging beneath her own perfume. Her skin seemed to hum. He understood nothing anymore.

The rhythm was established. Wednesday nights she’d leave after dinner with an overnight bag, or Monroe would arrive in a sleek black sedan. The apartment would be achingly empty, the silence a physical presence. Rick would wander through the rooms like a ghost, the phantom sounds of their last encounter seeming to echo.

The ‘Conference’ texts came erratically. A Tuesday morning. A Friday late afternoon. Once, a Saturday at noon while Rick was at the farmers market buying vegetables he knew she wouldn’t eat. Each one was a tiny detonation in his day, leaving him hollowed out and numb.

A month in, a ‘Conference’ text arrived on a Thursday evening. He was home.

He sat in the dark living room, waiting. He heard the elevator chime. The soft murmur of voices at the door—hers, and that low, confident rumble. The door opened and closed.

They didn’t come into the living room. They went straight down the hall to the master bedroom. Their voices were hushed, excited. The bedroom door shut.

Rick sat, listening to the silence. Then the sounds started. They were different tonight.Playful. He heard Kate’s genuine laugh, a shriek that was half surprise, half delight.“Stop! Not yet!”

A low laugh from Monroe. “You say that like you mean it.”

Then a thud, as if someone had been playfully pushed onto the bed. “I want to taste you first,” Monroe’s voice was clearer now, predatory and deliberate. “Get those legs open.”

There was a long, wet silence. Then Kate’s moan, long and unraveling. “Oh, fuck… your mouth…”

“You like that, don’t you?” Monroe’s voice was muffled.“Yes! Don’t stop!Right there! Oh, god, right there!” Her voice was climbing, losing all control. The bedsprings creaked in a frantic rhythm.

“You gonna come on my tongue, Kate? Come on. Let go.”

Her scream was sharp, guttural, ringing through the apartment. It was followed by shuddering sobs.

Rick’s hands were fists in his lap.

Before she could even catch her breath, Monroe’s voice came again, thick with intent. “My turn.On your knees. Now.”

He must have moved her, because there was a scrambling sound. Then a low, rhythmic grunting. The wet, obscene slap of flesh pounding flesh. Harder. Faster. No words now, just animal sounds.

Monroe’s tempo became brutal, punishing. “Take it. Take all of it.” He groaned, the sound feral.“Yeah. Oh, fuck, yeah. Gonna fill you up.”

A final, guttural roar from Monroe, a wordless cry from Kate that sounded like both pain and triumph. Then a heavy silence, broken only by ragged breathing.

Fifteen minutes later, Kate emerged. She was flushed, her hair wild, wrapped in a silk robe that gaped at the chest. She was sated. Glowing. She looked at Rick sitting in the dark.

“You’re home,” she said, no guilt, just a statement.He nodded.

She came over, the scent of sex and sweat and him rolling off her. She knelt in front of his chair, her eyes soft. She reached out and took his limp hand. Her touch was electric, alive.

“Thank you,” she whispered, her voice raw from screaming. “For this.”

He looked at her, this beautiful, hungry stranger wearing his wife’s face. The silence stretched. The momentum of their new life barreled forward, and he was just a spectator strapped to the tracks.

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